317084981 has 2 divisors, whose sum is σ = 317084982. Its totient is φ = 317084980.

The previous prime is 317084959. The next prime is 317084987. The reversal of 317084981 is 189480713.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 303944356 + 13140625 = 17434^2 + 3625^2 .

It is an emirp because it is prime and its reverse (189480713) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 317084981 - 2¹⁴ = 317068597 is a prime.

It is a super-2 number, since 2×317084981² = 201085770351540722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (317084987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158542490 + 158542491.

It is an arithmetic number, because the mean of its divisors is an integer number (158542491).

Almost surely, 2^317084981 is an apocalyptic number.

It is an amenable number.

317084981 is a deficient number, since it is larger than the sum of its proper divisors (1).

317084981 is an equidigital number, since it uses as much as digits as its factorization.

317084981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 41.

The square root of 317084981 is about 17806.8801590846. The cubic root of 317084981 is about 681.9071182093.

The spelling of 317084981 in words is "three hundred seventeen million, eighty-four thousand, nine hundred eighty-one".